I doubt it, but we cannot be sure, because there are bound to be fields in other countries ripe for exploitation with the same technology.

对此我虽然持怀疑态度，但也不能妄下结论，因为在其他国家必然有油田已具备采用与美国相同技术的条件。

youdao

Everywhere we can see the scene of bumper crops: on the fields is golden rice, on the trees are ripe fruits.

到处都可以看到一派丰收的景象：田野里是金黄的水稻，树枝上挂满成熟的果实。

youdao

If the US can increase production by 25% within the decade, could the world?? I doubt it, but we cannot be sure, because there are bound to be fields in other countries ripe for exploitation with the same technology.

FORBES: US Oil Industry Leads the Way in Extracting Hard-to-Get Crude; Steel to Benefit